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Delvig [45]
3 years ago
15

Please help me please will give brainliest to ​

Mathematics
2 answers:
Marysya12 [62]3 years ago
8 0

Answer:

16 Children, 107 Adults

Step-by-step explanation:

a + c = 123

7a + 5c = 829

a + c = 123

a = 123 - c

7a + 5c = 829

7(123 - c) + 5c = 829

861 - 7c + 5c = 829

861 - 2c = 829

-2c = 829 - 861

-2c = -32

-2c/-2 = -32/-2

c = 16

a + c = 123

a + 16 = 123

a = 123 - 16

a = 107

tino4ka555 [31]3 years ago
7 0

Answer:

Step-by-step explanation:

\left \{ {{a+c=123} \atop {7a+5c=829}} \right.

7a + 7c = 861 ...... <em>(1)</em>

7a + 5c = 829 ..... <em>(2)</em>

<em>(1)</em> - <em>(2)</em>

2c = 32

<u><em>c = 16</em></u>

<u><em>a = </em></u>123 - 16 =<u><em> 107</em></u>

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Answer:

P(X = 0) = 0.9891

Step-by-step explanation:

Given

\lambda = 0.011

Required [This completes the question]

The probability of exactly 0 deaths

This probability follows a Poisson distribution, and it is given by:

P(X = x) = \frac{e^{-\lambda}\lambda^{x}}{x!}

For 0 deaths;

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So, the expression becomes

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P(X = 0) = \frac{e^{-\lambda}\lambda^{0}}{1}

P(X = 0) = \frac{e^{-\lambda}*1}{1}

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Substitute 0.011 for \lambda

P(X = 0) = e^{-0.011}

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<em>The probability of having exactly death is 0.9891</em>

8 0
3 years ago
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Norma-Jean [14]
To get the area of a rectangle, multiply the side lengths.
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~AgentCozmo4, Moderator
4 0
3 years ago
(d) Sandy’s gross annual income is $51,350. She is paid biweekly and has 5% deducted from her paycheck for her 403(b). Her emplo
worty [1.4K]

Based on the annual income, the payment period, and the amount deducted for the 403(b), the amount deposited into Sandy's 403(b) is $220.

<h3>How much is deposited into Sandy's 403(b)?</h3>

First find the biweekly income:

= 51,350 / (52 weeks / 2 )

= 51,350 / 21 weeks

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5% is deducted from her wages and the employer matches 4% of the salary. The amount deposited is:

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Find out more on 403(b) at brainly.com/question/2908111.

8 0
2 years ago
Dale invested his savings in two investment funds. The $4000 that he invested in Fund A returned a 5% profit. The amount that he
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Answer:

Dale invested in fund B $8,000

Step-by-step explanation:

We can arrange the given information into the nex equation:

4000*5% + x*2% = (4000+x)*3%

4000*0.05 + 0.02x = 4000*0.03 + 0.03x

200 + 0.02x = 120 + 0.03x

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4 0
3 years ago
How many solutions does the equation |x+7|= -1 have?
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None.

The absolute value of something cannot be <em>negative</em>.

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